外科住院患者耐碳青霉烯类肠杆菌医院感染1∶1病例对照研究

Health care-associated carbapenem-resistant Enterobacteriaceae infections among hospitalized patients of surgery department: a 1∶1 ratio of case-control study

  • 摘要: 目的 探讨外科住院患者碳青霉烯类耐药肠杆菌(CRE)医院感染的流行病学特征及危险因素,为临床合理用药和感染防控提供依据。方法 采用1∶1病例对照研究设计,回顾性纳入2014年1月-2024年12月湖北医药学院附属太和医院外科住院发生CRE医院感染患者为病例组,按性别、入院科室、年龄及基础疾病匹配非CRE感染患者为对照组。收集两组人口学特征、基础疾病、住院时长、侵入性操作及抗菌药物暴露等资料,分析CRE感染危险因素。结果 共纳入118对CRE感染患者与匹配对照。CRE感染多见于神经外科、骨科及心胸外科; 肺炎克雷伯菌为主要致病菌,对头孢类和氟喹诺酮类药物耐药率均较高(>70%),对替加环素和多黏菌素B仍保持较好敏感性。病例组低蛋白血症发生率、住院时长、侵入性操作比例及广谱抗菌药物使用率均高于对照组(P<0.05)。多因素logistic回归分析显示,穿刺操作( OR=5.647,95%CI:1.687~21.275)、使用人血白蛋白( OR=3.465,95%CI:1.078~11.765)及青霉素类抗菌药物暴露( OR=5.281,95%CI:1.754~17.368)为CRE医院感染的独立危险因素。结论 外科住院患者CRE医院感染与穿刺操作、人血白蛋白使用及青霉素类抗菌药物暴露密切相关。

     

    Abstract: OBJECTIVE To explore the epidemiological characteristics and risk factors for health care-associated infections (HAIs) with carbapenem-resistant Enterobacteriaceae (CRE) among the hospitalized patients of surgery department so as to provide bases for reasonable clinical use of drugs, prevention and control of the infections. METHODS By means of a 1∶1 ratio of case-control study, the patients who had HAIs with CRE and were hospitalized in surgery department of Taihe Hospital Affiliated to Hubei University of Medicine from Jan. 2014 to Dec. 2024 were enrolled in the study and were assigned as the case group. The patients with non-CRE infections were chosen as the control group by matching with the sex, hospitalization department, age, and underlying diseases. The data including demographic characteristics, underlying diseases, length of hospital stay, invasive procedures and exposure to antibiotics were collected from the two groups of patients. The risk factors for the CRE infections were observed. RESULTS A total of 118 pairs of CRE infection patients and matched controlled patients were enrolled in the study. The CRE infections were more common in neurosurgery department, orthopedics department and cardiothoracic surgery department. Klebsiella pneumoniae was the predominant species of pathogen and was highly resistant to cephalosporins and fluoroquinolones (with the drug resistance rates more than 70%), and it maintained high susceptibility to tigecycline and polymyxin B. The incidence of hypoproteinemia, length of hospital stay, proportion of patients treated with invasive procedures and utilization rate of broad-spectrum antibiotics were higher in the case group than in the control group (P<0.05). Multivariate logistic regression analysis showed that puncture(OR=5.647,95%CI:1.687 to 21.275), use of human albumin(OR=3.465,95%CI:1.078 to 11.765) and exposure to penicillins(OR=5.281,95%CI:1.754 to 17.368) were independent risk factors for the HAIs with CRE. CONCLUSION The HAIs with CRE in the hospitalized patients of surgery department are closely associated with the puncture, use of human albumin and exposure to penicillins.

     

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